Mitsubishi Electric MELSEC iQ-R Series User Manual page 496

Input signals
Device number
*1
X0
*1
X1
*1
X2
*2
X3
*2
X4
X5
*3
X6
*1
X7
*1
X8
*1
X9
*2
XA
*2
XB
XC
*3
XD
XE
XF
X10
X11
X12
X13
X14
X15 to X16
*1
X17
*1
X18
X19
X1A
X1B
X1C
*4
X1D
*5
X1E
*6
X1F
*1 The device does not turn ON/OFF by executing a dedicated instruction when using a function that corresponds to the input signal.
*2 The device turns ON/OFF by executing a dedicated instruction when using a function that corresponds to the input signal.
(ONOFF: Data read completion)
*3 The 'CH Switching mode' (X6/XD) turns ON when the following function is performed.
 Mode switching, transmission sequence initialization, reception data clear (by buffer memory), user frame use enable/disable
designation, UINI instruction, programmable controller CPU information clear
While the 'CH Switching mode' (X6/XD) is ON, do not issue a communication request to a target interface.
(The transmission/reception processing of C24 is stopped while the 'CH Switching mode' (X6/XD) is ON.)
*4 'Predefined protocol ready' (X1D) is a signal that turns ON when predefined protocol communication becomes ready.
*5 Module READY is a signal that sends a signal of the applicability of accessing to C24 from the CPU module.
Use it as an interlock signal for a program.
*6 Restart the CPU module when the watchdog timer error is turned ON.
If the error still occurs after restarting, refer to the following section and take corrective actions.
Page 463 RUN LED turns OFF
APPENDICES APPENDIX
494
Appendix 2 Input/Output Signal List
Signal name
CH1 Transmission normal completion
CH1 Transmission abnormal completion
CH1 Transmission processing
CH1 Reception data read request
CH1 Reception abnormal detection
CH1 Protocol execution completion
CH1 Switching mode
CH2 Transmission normal completion
CH2 Transmission abnormal completion
CH2 Transmission processing
CH2 Reception data read request
CH2 Reception abnormal detection
CH2 Protocol execution completion
CH2 Switching mode
CH1 Error occurrence
CH2 Error occurrence
Modem initialization completion
Dialing
Connection
Initialization/connection abnormal completion
Modem disconnection completion
Use prohibited
User frame read completion from flash ROM
User frame write completion from flash ROM
Use prohibited
CH1 Global signal
CH2 Global signal
Parameter initialization completion
Predefined protocol ready
Module READY
Watchdog timer error
Reference

Page 53 Receiving Data from Target
Device
Page 87 Receiving Data from Target
Device

Page 377 SWITCHING THE MODE
AFTER STARTING

Page 53 Receiving Data from Target
Device
Page 87 Receiving Data from Target
Device

Page 377 SWITCHING THE MODE
AFTER STARTING

Page 160 List of input/output signals for
the modem function

MELSEC Communication Protocol
Reference Manual

Page 48 Execution Condition of
Predefined Protocol Communication
